Malicious PDF — malware analysis report

Static analysis result for SHA-256 436db4f5b5817f76…

MALICIOUS

PDF

43.1 KB Created: 2020-08-16 12:30:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2afe2189f04fb97a10fada904953a801 SHA-1: cbb378ed78272bd41a7cd838a33a4d6cb09e0405 SHA-256: 436db4f5b5817f764f2bd4edaaa3de573c64a4c9cacd93d4715475507c4c5e0b
170 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links, many pointing to external PDFs hosted on Shopify, suggesting a link farm for SEO manipulation or to obscure malicious destinations. One critical heuristic indicates a direct link to a known malicious redirector. The document body and heuristics also suggest a social engineering lure, prompting the user to install a browser extension or update, which is a common tactic for malware delivery. The primary malicious URL identified is ttraff.cc, which redirects to a page related to 'rpg chrome wolf mod apk'.

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=rpg+chrome+wolf+mod+apk
    • http://gujojek.lofgrenmusicstudio.com/uploads/1/3/0/7/130776031/8b8b43d7f.pdf
    • http://zemojox.unitedinstitutions.org/uploads/1/3/0/9/130969723/cc10efb7bae5ae1.pdf
    • http://files.psychickerilyn.com/uploads/1/3/1/4/131453221/zizizobinubalegosob.pdf
    • http://files.venetoreview.com/uploads/1/3/2/3/132302780/konudoravesu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8440/6181/files/apnea_central_del_sueo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4452/7528/files/jolagividen.pdf
    • https://cdn.shopify.com/s/files/1/0429/7005/4805/files/99732434531.pdf
    • https://cdn.shopify.com/s/files/1/0430/0662/3903/files/pdf_to_word_document_converter_mac.pdf
    • https://cdn.shopify.com/s/files/1/0434/8300/5078/files/47106875727.pdf
    • https://cdn.shopify.com/s/files/1/0440/2964/0854/files/fazovixumelipexujumedomej.pdf
    • https://cdn.shopify.com/s/files/1/0433/6553/1806/files/75295101944.pdf
    • https://cdn.shopify.com/s/files/1/0435/3028/9311/files/arabic_calligraphy_learning.pdf
    • https://cdn.shopify.com/s/files/1/0431/9238/5700/files/gisopoguvida.pdf
    • https://cdn.shopify.com/s/files/1/0432/7473/1685/files/ballou_logistica_administracion_de_la_cadena_de_suministro.pdf
    • https://cdn.shopify.com/s/files/1/0432/0811/4340/files/83135345834.pdf
    • https://cdn.shopify.com/s/files/1/0439/3733/3406/files/angielski_sowotwrstwo_b2.pdf
    • https://cdn.shopify.com/s/files/1/0433/3967/7861/files/vikinugabe.pdf
    • https://cdn.shopify.com/s/files/1/0431/3445/1874/files/70766020428.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064e1.bin
3cc2da27418510220bed622301652bd1c9319df2c6ae96c99c5dec94d4e5ea18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64E1 5556 bytes
font_01_sfnt_off000077b6.bin
61e4c2697851dbbbd517a5cbbe5fc873d7e1d1c3c764f7a70d80f594c1033b33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77B6 12460 bytes

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